When I found this little fungus I was sure it was going to be a species of Omphalina. However I was surprised to find it had pink angular spores, and therefore had to be an Entoloma.
It had the incrusting pigment in the pileipelis, that narrowed it down to 4 species in Flora Agaricina Neerlandica. and the heterodiametrical spores keyed it out from the other three as the rarely reported Entolom undatum.
It was growing with moss on the remains of a cinder pathway of a disused mine railway at New Lount Nature Reserve in Leicestershire.
Peter